<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        // 常规 
        let s1 = '12'
        let s2 = "1234"

        // 优势：1. 可以换行 2. 可以嵌入
        // 模板 
        let age = 20
        let print = `${age}:
            ${age >= 18 ? '已经成年了' : '还是没有成年'}`
        console.log(print);
        
    </script>
</body>
</html>